Roller or wheel.



PATENTED APR. 14., 1908.

W. LI CURTIS. ROLLER 0R WHEEL.

APPLICATION FILED JAN. 3, 190B.

vWALTER L. CURTIS, OF WORCESTER, MASSACHUSETTS.

ROLLER OR WHEEL.

Specification of Letters Patent.

Application led'January 3, 1908. Serial No. 409,171.

Patented April 14, 190s.

To all whom it may concern.'

Be it known that I, WALTER L. CURTIS, a citizen ofV the United States,residing at Worcester, in the county of Worcester and State ofMassachusetts, have invented a new and useful Roller or Wheel, of whichthe following is a specification.

The object of this invention is to provide a new and improved roller orwheel especially adapted for use in roller skates, casters, and sinn arlocations where a strong, light article is needed, which can be made ofsheet metal and so constructed as to be made practicall of balls.

1n one integral piece, whereby the same wi l not come to pieces fromwear and jar.

The invention is illustrated in the accompanying drawing, referring towhich Flgure 1 is a Side elevation of the improved construction. Fig. 2is a central sectional elevation, and Figs. 3. and 4 are views similarto Fig. 2 illustrating modifications.

Referring to the drawings and in detail, the im roved wheel or rollerwill be Seen to be ma e and constructed as follows: l

1() designates a circular rim or tread made out of sheet metal., Thesheet metal is doubled back at each edge or side under the rim as at11-11, So that the rim or tread in substance will be double. From thein-bent portions 11-11 the sheet metal extends centrally to form flanges12-12. If desired these flanges may be bored or punched out as atV 120,so that the flanges 1x2-12 will form spokes. From the fianges 12-12 thesheet metal extends outwardlyv as at 13-13 to form a double central hub.A wheel or roller constructed in this way is very vstrong and efficient.It is provided with a long wearing tread, and bemg formed from sheetmetal will not j ar loose or come to pieces from wear or blows.

15 designates a double ball-rest which is made out of one piece orcylinder of sheet metal, and which has a central inner bend ordepression 16 so that a double ball-way or rest is provided. Thisball-way or rest is held in place in the double central hub by turningor bending the ends or edges of the central hub down over the edges orends. of the double ball-rest, as at ILL-14. In this way the doubleball-rest is tightly and securely held in place in the wheel or roller.

In Fig. 3 a similar construction is shown, except that the ball-rest 17therein employed has a single central groove170 for a single set Byreference to Figs. 2 and 3 it will be seen that the outer edges of thehub project over the outer edges of the ball-rest but do not quite coverthem so that an annular ledge 19 'is provided for receiving and holdingthe dust ca (not shown).

n Fig. 4 a modification is shown in which two ball rests 18-18havingflan'ges 180 are pressed or forced securely into the doublecentral hub 13D-130 of the wheel'or roller.

By the aforesaid construction an admirable wheel or roller is providedwhich is espe- JIciaclily adapted for use in the locations speci- Thedetails herein shown and described Inay be greatly varied by a skilledmechanic without departing from the scope of my invention as expressedin the claims.

Having thus fully described my invention, what I claim and desire tosecure by Letters- Patent is 1. A wheel having a two-part central hub,double flanges or spokes, and a double rim or tread all formed from onepiece of metal,

each edge of the tread being lntegrally connected with one of theflanges whereby res- Sure im arted to either outer ed e o l the treadwill be transmitted to both anges.

2. A wheel having an annular one-piece double ball rest having anannular central depression. j

3. A wheel having a two-part central hub, flanges or spokes, and a rimor tread, all formed of one piece of metal, and a ball-rest held inplace in saidtwo-part central hub by inwardly turned flanges on theedges of said hub.

' 4. A wheel having a twoart central hub, flanges or spokes, and a doule rim or tread, all formed from one iece of metal, and a doubleball-rest forme of one piece and having a center inwardly projecting,said ballrest being held in place in said two-part central hub byflanges inwardly turned on the edges of said hub.

A wheel having atwo-part central hub, flanges or spokes, and arim ortread formed of sheet metal, and a ball-rest, the outer annular edges ofthe hub projecting over u on .the outer faces of the ball-.rest allaroun to form therewith an annular ledge outside of the ball-rest forreceiving a dust cap.

6. A wheel having a two-part central hub, flanges or spokes, and a rimor tread all formed from one piece of metal, `the outer j annular edgesof the hub projecting inwardly all around, and a ball-rest held betweensaid my hand, in the presence of two subscribing inwarlly Ilyroljlotingedges. 1 d b1 b u Witnesses 7. W ee aving an annu ar ou e a restprovided with a central annular depres- WALTER L CURTIS' 5 sion andformed of one piece of sheet metal Witnesses:

of substantially uniform thickness. LOUIS IW. SOUTHGATE, In testimonywhereof I have hereunto set i C. FoRREsT WEssoN.

